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| author | Gui Jianfeng <guijianfeng@cn.fujitsu.com> | 2010-11-30 20:52:47 +0100 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-11-30 20:52:47 +0100 |
| commit | 760701bfe14faee8ea0608a9cab2046071d98a39 (patch) | |
| tree | 780193b7803aced7ecb2a53f0ce43150eb8ebeab /block | |
| parent | b54ce60eb7f61f8e314b8b241b0469eda3bb1d42 (diff) | |
| download | lwn-760701bfe14faee8ea0608a9cab2046071d98a39.tar.gz lwn-760701bfe14faee8ea0608a9cab2046071d98a39.zip | |
cfq-iosched: Get rid of on_st flag
It's able to check whether a CFQ group on a service tree by
checking "cfqg->rb_node". There's no need to maintain an
extra flag here.
Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/cfq-iosched.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index e18d316ae652..5d0349d602fe 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -179,7 +179,6 @@ struct cfq_group { /* group service_tree key */ u64 vdisktime; unsigned int weight; - bool on_st; /* number of cfqq currently on this group */ int nr_cfqq; @@ -863,7 +862,7 @@ cfq_group_service_tree_add(struct cfq_data *cfqd, struct cfq_group *cfqg) struct rb_node *n; cfqg->nr_cfqq++; - if (cfqg->on_st) + if (!RB_EMPTY_NODE(&cfqg->rb_node)) return; /* @@ -879,7 +878,6 @@ cfq_group_service_tree_add(struct cfq_data *cfqd, struct cfq_group *cfqg) cfqg->vdisktime = st->min_vdisktime; __cfq_group_service_tree_add(st, cfqg); - cfqg->on_st = true; st->total_weight += cfqg->weight; } @@ -896,7 +894,6 @@ cfq_group_service_tree_del(struct cfq_data *cfqd, struct cfq_group *cfqg) return; cfq_log_cfqg(cfqd, cfqg, "del_from_rr group"); - cfqg->on_st = false; st->total_weight -= cfqg->weight; if (!RB_EMPTY_NODE(&cfqg->rb_node)) cfq_rb_erase(&cfqg->rb_node, st); |